John Dickinson, a Founding Father of the United States, was a solicitor and politician from Philadelphia, Pennsylvania, and Wilmington, Delaware, known as the "Penman of the Revolution" for his twelve Letters from a Farmer in Pennsylvania, published individually in 1767 and 1768. As a member of the First Continental Congress, where he was a signee to the Continental Association, Dickinson drafted most of the 1774 Petition to the King, and then, as a member of the Second Continental Congress, wrote the 1775 Olive Branch Petition. When these two attempts to negotiate with King George III of Great Britain failed, Dickinson reworked Thomas Jefferson's language and wrote the final draft of the 1775 Declaration of the Causes and Necessity of Taking Up Arms. When Congress then decided to seek independence from Great Britain, Dickinson served on the committee that wrote the Model Treaty and then wrote the first draft of the 1776–1777 Articles of Confederation and Perpetual Union. Dickinson later served as president of the 1786 Annapolis Convention, which called for the Constitutional Convention of 1787. Dickinson attended the Convention as a delegate from Delaware.